WASHINGTON (AP) — Republicans are expecting President Donald Trump to announce Saturday that he is nominating Judge Amy Coney Barrett to the Supreme Court, as he aims to put a historic stamp on the high court just weeks before the election. Even before Trump unveils the pick, conservative groups and congressional allies are laying the groundwork for a swift confirmation process for Barrett. They, like the president, are wasting little time moving to replace the late Justice Ruth Bader Ginsburg, organizing multimillion-dollar ad campaigns and marshalling supporters both to confirm the pick and to boost Trump to a second term.